Mode of thkowingr shuttles in poweb-looms



TED STATENT caricati;

R. P. CUNNINGHAM, 0F HAMPTON, CONNECTICUT.' Y

MODE or THRO'WING SHUTTLES 1N POWER-toons.

Specification forming' part of Letters Patent No. 3,062, dated April 25 1843; Ressue'd March 14,

, 1846, Nasi. 7

To all whom t may concern.'

Be it known that I, ROBERT PIERPONT CUNNINGHAM, of Hampton, in the county of vWindham and State of Connecticut, have invented new and useful improvements on power-looms the shuttles in which are so actuated as that theirv terminating motions and those of the vibratory parts mediate between them, and the picker-cams act on those cams which receive the momentum and transmit much to the rotation of the shaft, thence to be held in reverse motion to be again transmitted, with that accumulating from the accessive power, to a new motion of the shuttle in succession, whereby lgreat accession of speed and economy of power in the operation of the power-loom are effected, a large portion of the power which is lost or wasted in the ordinary modes of throwing such shuttles being saved by `my manner of forming, arranging, and actuating the respective parts applied in that operation, while atthe same time much of that tremor, noise, and wear incident to power-looms as now made is prevented; and I do hereby declare that the following is a full and exact description ofmy improvements.

In the accompanyingdra'win'gs, Figure l, is a perspective representation of suchparts of my improved power loom as are necessary to show the construction and arrangement of the improved apparatus invented by me. Fig. 2, shows a variation .in themanner, the arrangements of the cams,- thetreadles, and the picker staves, but operating on the same principles as that shown in Fig. l. Figs. 3,

and t, in prole, show the vgeneral form of one of my two similar sets of alternate wide and narrow picker cams, and of the facings, or friction-rolls, or stumps of the opposite levers, or treadles, to act with them. These cams may, if desired, be varied in form, so as t0 effect two, or more, reciprocating motions of the picker staves in one revolution of the cam shaft. Fig. 5, shows a form of collars, h, and of connecting rods, o, which I sometimes use to connect the picker staves, g, and the picks, m; and in Figs. l, and 2, a, is a form ofV my application of boxes, as fixed to treadles to extend the bearings on their center pins, which I use sometimes, in preference tothe ordinary treadle guide. Y

I contemplate varying the ordinary pro-Y portions of the heddle cams,.in such manner as to eifectra less proportionateyelocity of,

the heddles, for texturing on some ktender i cams, c2, is in great part hidden infthis 4figure by the sword of the lay. The camsV c, and cl2, project from the shaft in the same direction with each other, and the cams cl, and 02,. in the opposite direction, being proper to t-he necessary motions of the treadles thus situated. The heddle cams are not shown, but they are to be placed, and to operate in the usual way; f, k, and f2, 7a2, are the picker treadles carrying the rolls, or stumps, s, t, s, t, 4opposite to the picker cams with which they operate, andare acted and alternately act. The picker staves g, and g2, with the attached pulleys 71., and h2, are

formed similar to those used singly in or- A picks m, and m2, by the mediate rods, 1, 1',

Fig. l. I have formed these rods, sometimes with elastic ends, as shown in Fig. 5, 1, where they are attached to the picks, m, nearly up opposite to the points of impingement 0, of the picks and the points of the. shuttle,--and to the picker staves nigh their ends g, by collars fitted on so as to admit a` small range of position of iixture, in order to time the motions of the shuttle, with of the reced'ing'picks.y

The forms of the camsas exemplified, corthose y respondent with the oppositel friction rolls,l Y

or stumps fitted to act'withthem, Figs. 3, and 4, may be varied, and calculated to any scales of pressuresw'hich it may be desired to be acted between them, or between the picksand the shuttle on the motions of each other. In Figs. 3 and 4L, the part of the wide cams from Z, to w, act on the bearings s, and actuate the shuttle with the intermediate parts, to the maximum of their transverse velocities, while the opposite bearing, or stump, t, follows in on the accelerated recedure of the alternate narrow cam from o, to 7c, and thence, acts the power of the velocities of the mediate parts, now free of the shuttle, in pressing in on the retarding part from 7c, to a', where the recedure of the cam terminates, and the pick and intermediate parts have acted back a return of their momentum; the velocity of the shuttle is diminishing on its way, and the Opposite narrow cam, by its act-ing part from m2, to k2, presses on the lever-bearing tz, and acts a return motion, through the mediate part-s,

' to the opposite pick, mi', nearly equal to the velocity remaining on the shuttle, which now joins, or soon overtakes and joins the pick on its declining motion, and is thence retarded with the motive mediate parts, these having followed on the accelerated recedure of the opposite wide cam from U2 to 'm2, by the stump s2, now act, together Vwith the shuttle, on the part of decreasing recedure from @02 to Z, where the recedure of the cam terminates, and having received the extra momentum of the original motions of the shuttle and these intermediate parts, it is retained, with that preceding from the other motive parts, and augments the reserve, in aid of the accessive power, to effect'the opposite motion in like manner, and thus 0n, in succession. Thin additions as o, o, 7c, w, and o, 0, co2, Z, &c., are made to the static calculated faces of the cams, as allowances for the elastic yieldings of materials in manner to insure a close continuance of following parts.

If free of allowances for component matter, or resistances, the cams in each set, with the opposite bearings, or stumps carrying the mediate parts, are so formed vthat as one lever, or treadle is forced out, the other is permitted to return in with the same velocity, the alternate motions are reversedV in traverse, and in their relative velocities, and likewise are varied in their periodic rates; while in operation, stress is applied to the more or less ponderous, and elastic materials, in drawing them into motion, and in overcoming the resistances of labor, &c.,

thence I add to the motionary parts of the cam faces such additional quantities as are required to put the connecting parts to such stress, and to insure the contiguity of the bearings with the accelera-ting recedures of the cam-faces, as represented in the draw-V` ings, where accelerations in .the following are behind those of the leading parts.

Having thus fully described the nature of my improvements and shown the operation n of the respective parts of my apparatus,V

what I claim therein as new, and desire to'Y secure by Letters Patent, aren. r. CUNNINGHAM.

Witnesses p Y IDHiLii?V (PEARL, CLARIssA PEARL.

[FIRST BINTED 1913.] 

